{"id":"F2006L00459","name":"AD/CFE 738/2 - Fan Rotor Discs","slug":"ad-cfe-738-2-fan-rotor-discs","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":117159,"registerId":"commonwealth-F2006L00459-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"CFE Company Turbine Engines - CFE 738 Se","sectionType":"division","heading":"CFE Company Turbine Engines - CFE 738 Series","content":"### CFE Company Turbine Engines - CFE 738 Series\n\n| AD/CFE 738/2 | Fan Rotor Discs | 3/2006 |\n| ------------ | --------------- | ------ |\n\n| Applicability: | CFE Company model CFE738-1-1B turbofan engines that contain fan rotor disks part number (P/N) 3050745-2, serial numbers (SN's) 000322903511 through 000322903536, and 000322903538 through 000322903541.Note 1: These engines are installed on, but not limited to Dassault Aviation Falcon 2000 series aeroplanes. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |","sortOrder":0},{"sectionNumber":"AD/CFE 738/2","sectionType":"part","heading":"AD/CFE 738/2","content":"## AD/CFE 738/2","sortOrder":1},{"sectionNumber":"Fan Rotor Discs","sectionType":"part","heading":"Fan Rotor Discs","content":"## Fan Rotor Discs","sortOrder":2},{"sectionNumber":"3/2006","sectionType":"part","heading":"3/2006","content":"## 3/2006","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"rejected","complexity_score":2,"rejection_reason":"This content is a fragment or stub — it contains only the identifying header information (AD number, title, date, and applicability table) for an Airworthiness Directive. It lacks the actual regulatory substance: the mandatory actions required, compliance timeframes, method of compliance, or any procedural instructions. This appears to be a navigation page or index entry from a larger document database rather than the complete legislative instrument.","scope_assessment":{"changed":false,"description":"This appears to be a standard, targeted airworthiness directive focused on a specific manufacturing batch of engine components. The narrow applicability (specific part numbers and serial number ranges) indicates it remains tightly scoped to address a particular safety issue without expansion beyond its original technical purpose."},"complexity_factors":["Very short document — appears to be a header/identifier section only, not the full directive text","Limited to single applicability criterion (specific P/N and S/N ranges)","No procedural steps, compliance times, or technical instructions visible in this excerpt","No cross-references to other legislation or technical standards in the provided text","Simple tabular format with basic identifying information"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's aviation regulator (CASA) requiring specific maintenance actions on aircraft engines.\n\n**What it does:**\nThis directive orders inspections and/or replacements of **fan rotor discs** (the large spinning blades at the front of jet engines) on specific **CFE738-1-1B turbofan engines**. These engines power **Dassault Falcon 2000 business jets** and potentially other aircraft.\n\n**Who it affects:**\n- Aircraft owners and operators with CFE738-1-1B engines\n- Specifically those with fan rotor discs bearing **part number 3050745-2** and **serial numbers in the ranges 000322903511-000322903536 and 000322903538-000322903541**\n- Maintenance organisations servicing these engines\n\n**Why it matters:**\nFan rotor discs are critical safety components. If they fail, the engine can disintegrate, potentially causing catastrophic damage to the aircraft. This AD likely responds to a discovered manufacturing defect, fatigue crack, or other safety issue affecting this specific batch of discs. Compliance is **legally mandatory** — operators cannot fly these engines until the required work is done.\n\n**Key details:**\n- **AD number:** AD/CFE 738/2 (the second directive for this engine type)\n- **Issued:** March 2006\n- **Trigger:** Specific part and serial numbers suggest a targeted manufacturing batch problem"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied excerpt does not provide information that indicates any change in scope from an original intent. The text solely defines the applicability (specific part and serial numbers) and notes typical aircraft installation; no comparative or historical scope information is present in the supplied material."},"complexity_factors":["Very narrow applicability by part number and explicit serial-number ranges (precise tracing required).","Absence in the supplied text of required actions, compliance times, or stated unsafe condition (creates ambiguity about obligations).","Potentially cross-platform installation (note indicates engines installed on, but not limited to, a particular aeroplane type), which increases tracking complexity across fleets.","Administrative identification details (AD number, date, series) are present but without procedural content, requiring reference to other documents for implementation.","Enforcement, approved repair methods, and exemptions are not specified in the excerpt, leaving operational discretion and cost allocation unclear."],"plain_english_summary":"This AD (CFE 738/2) narrowly identifies specific fan‑rotor disks (part number and serial ranges) installed in CFE738‑1‑1B engines (used, for example, on Falcon 2000s). It therefore affects aircraft owners/operators who must check maintenance records and inventories to see if the listed parts are fitted. The supplied excerpt does not state any required inspections, repairs, compliance times, costs or enforcement—consult the full AD or the issuer for the mandated actions and impacts."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cfe-738-2-fan-rotor-discs","history":"/api/acts/ad-cfe-738-2-fan-rotor-discs/history","analysis":"/api/acts/ad-cfe-738-2-fan-rotor-discs/analysis","conflicts":"/api/acts/ad-cfe-738-2-fan-rotor-discs/conflicts","importantCases":"/api/acts/ad-cfe-738-2-fan-rotor-discs/important-cases","documents":"/api/acts/ad-cfe-738-2-fan-rotor-discs/documents"}}